Metal catalyzed preparation of carbon nanomaterials by hydrogen–oxygen detonation method

One-pot rapid preparation of carbon-coated Co–Cu alloy composites via the gaseous detonation method

“…2, it is impossible to determine whether the samples contain pure carbon, or it is probably amorphous. The diffraction peaks of carbon are so weak, which can also be found in our previous study [11,15], while the carbon structure can be seen in the TEM images. Therefore, it is necessary to further clarify the existence of the carbon phase and morphological characteristics of the samples by TEM characterization.…”

“…Therefore, the core-shell nanoparticles would be carbon-coated Co-Cu/Cu(Co-Cu/Cu@C) nanoparticles. Though it is difficult to determine the phase of the metal particle at the top of the CNTs, it can be inferred from our previous work [9,11], literature [17], and XRD characterization results that the metal nanoparticle should be Co-Cu alloys. The XRD analysis results show that there is no pure cobalt in samples.…”

“…The explosion source would affect the morphology of the carbon-coated Co-Cu alloy and carbon-coated metal (Co, Cu, Fe) nanoparticles by the gaseous detonation method [9,10]. Although CNTs and core-shell structure nanoparticles have been successfully and rapidly prepared by the gaseous detonation, it is difficult to search the literature on the synthesis of carbon-coated metal alloy composites by the gaseous detonation method [11]. Because of the different sublimation or vaporization temperatures of the precursor, it is difficult to form an alloy phase in the detonation process.…”

“…Because of the different sublimation or vaporization temperatures of the precursor, it is difficult to form an alloy phase in the detonation process. In our previous study, the carbon-coated Fe-Co alloy nanoparticles were attempted to be prepared using the gaseous detonation method; however, the Fe-Co alloy phase cannot be found in the XRD data, which means the exploration did not achieve the expected results [11]. After then, it was found that the precursor and explosion source are the key factors affecting the preparation of carbon-coated metal alloy composites.…”

Identification of CNT Growth Region and Optimum Time for Catalyst Oxidation: Experimental and Modelling Studies of Flame Synthesis

“…As the demand for CNTs in the world market continues to increase each year, the search for the ideal synthesis process for producing cheaper CNTs remains strong 4 . Significant numbers of research groups are still active in exploring new possibilities to manipulate the advantages of flame based synthesis process in producing CNTs [5][6][7][8][9][10][11][12][13] .…”